title: Orthognathic surgery considerations for patients with undiagnosed type I osteogenesis imperfecta.
abstract: OBJECTIVE
  This study reports the senior author's experience of orthognathic surgery in patients with prognathism and undiagnosed type I osteogenesis imperfecta and includes a review of the literature.
  
  
  METHODS
  Two patients with undiagnosed type I osteogenesis imperfecta underwent orthognathic surgery for correction of prognathism at Chang Gung Craniofacial Center, Taipei, Taiwan. The initial surgical plan was to perform 2-jaw orthognathic surgery in both patients.
  
  
  RESULTS
  The bone quality was found to be fragile during the operation, and the original plan was changed intraoperatively to 1-jaw mandibular surgery. Both operations were performed without complications, and wound healing progressed normally. Both the final facial profile and occlusal outcome were satisfactory in 1 patient, with mild relapse occurring in the second patient.
  
  
  CONCLUSIONS
  For patients with type I osteogenesis imperfecta, the orthognathic surgery plan should be simplified as much as possible. Prolonged intermaxillary fixation is recommended to facilitate bone union. Complications could possibly be avoided.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Chang Gung University, Taipei, Taiwan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Tashima
authors.forename: Kachin
authors.initials: K
authors.lastname: Wattanawong
authors.forename: Cheng-Ting
authors.initials: CT
authors.lastname: Ho
authors.forename: Ellen
authors.initials: E
authors.lastname: Wen-Ching-Ko
authors.forename: Anh
authors.initials: A
authors.lastname: Nguyen
authors.forename: Lun-Jou
authors.initials: LJ
authors.lastname: Lo
mesh_terms: D015519:Bone Density / Q000502:physiology; D004955:Esthetics, Dental; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007430:Intraoperative Care; D008297:Male; D008313:Malocclusion, Angle Class III / Q000601:surgery; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000002:abnormalities; D024343:Open Bite / Q000601:surgery; D056948:Orthognathic Surgical Procedures / Q000379:methods*; D010013:Osteogenesis Imperfecta / Q000150:complications* / Q000473:pathology; D010027:Osteotomy / Q000379:methods; D010347:Patient Care Planning; D017060:Patient Satisfaction; D011378:Prognathism / Q000601:surgery*; D012008:Recurrence; D016896:Treatment Outcome; D055815:Young Adult